Colorado Workers’ Compensation Rules for Employers
Colorado requires workers’ compensation from the first employee. Who is exempt, where to buy a policy, poster rules, injury deadlines and fines.
Colorado Workers’ Compensation
Coverage from the first employee, who sits outside it, what you post, and the deadlines that follow an injury
The Colorado founders who call me about workers’ compensation almost never ask whether they need it. They ask whether they need it yet. They have three people, or five, or a Saturday helper, and somewhere along the way they absorbed the idea that a threshold exists and that they are still comfortably under it.
Colorado has no threshold. The duty attaches at the first employee, and the Division of Workers’ Compensation says so in one sentence on its own coverage page: part-time, full-time or family, it makes no difference. What Colorado does have is a set of narrow exemptions that only work if you file for them, and a set of reporting clocks that start the moment somebody gets hurt.
This page covers one jurisdiction. How the system works in general, why the exclusive remedy bargain exists and what drives a premium all live in our guide to workers’ compensation insurance. Hiring, wages and leave belong to the Colorado HR compliance guide.
Who Has to Carry Coverage
Every Colorado employer with at least one employee must carry workers’ compensation insurance and keep it in force at all times. The Division states this without qualification on its insurance requirements page, adding that it applies regardless of whether the employees are part-time, full-time or family members.
The statute backs that up. Section 8-40-203 (1)(b) defines an employer as every person, association, firm or private corporation with one or more persons in service under any contract of hire, express or implied. There is no small employer carve-out to fall back on, and no waiting period for a new business.
The presumption does the rest of the work. Anyone who gets paid for their services is presumed by law to be an employee, so the question is never whether a worker is important enough to insure. It is whether that worker fits one of the specific exclusions the legislature wrote down.
Four coverage situations trip up small employers more often than the rest, and Colorado answers each of them in statute or in the Division’s own employer guidance rather than leaving them to a carrier.
| Situation | Colorado rule | Citation |
|---|---|---|
| You contract out any part of your work | You are a statutory employer, irrespective of the number of employees engaged in the work, and you are liable to pay compensation to the contractor and the contractor’s employees. That liability disappears if the contractor carries its own coverage | 8-41-401 (1)(a)(I) and (2) |
| You hire trades for construction work | Every person performing construction work on a construction site must be covered. You either put the contractors on your own policy and charge them for it, or collect proof of insurance or proof of a filed rejection from everyone you contract with directly. A violation draws the same daily fine as going uninsured | 8-41-404 (1)(a) and (3); Division employer guidance |
| Your employee is injured while working out of state | The Division states that Colorado employees working in other states are protected by their Colorado policy for up to six months, but that the policy may not satisfy the other state, so confirm with that state before the trip | Division employer guidance |
| An out-of-state employer sends staff into Colorado | Their worker is not a Colorado employee where the work is incidental, meaning randomly or fortuitously in Colorado, the worker is covered under another state’s act, and that act exempts Colorado employers in return. A separate exemption covers staff sent in temporarily, up to six months, from a contiguous state that gives Colorado employers the same treatment | 8-40-301 (1)(b); 8-41-212 |
| You take on a paid intern | The intern is an employee of your business and belongs on your policy. Where the internship is unpaid, the sponsoring school insures the student or pays you to add them | 8-40-302 (7); Division employer guidance |
The statutory employer row is the one that turns a clean company into a claim. Colorado publishes two databases for exactly this reason: one that verifies an active policy and one that shows whether a business has legally filed a rejection. Running a name through both before the contract is signed takes a minute and closes the biggest gap most small employers have.
Construction has a newer wrinkle on top of that. Senate Bill 26-093, signed and effective May 29, 2026, added section 8-41-213 to the Act: anyone applying for a building or construction permit for a project costing more than $1 million must file a signed declaration with the local permitting agency, under penalty of perjury and before work begins, confirming that everyone working under the permit, subcontractors included, carries valid coverage for the life of the permit. The Division publishes a Declaration of Compliance form for it on its employers page.
Who Sits Outside the Requirement
Colorado’s exemptions are narrow, and most of them are conditional on the employer having no other covered employees. The Division lists the common ones on its independent contractors and coverage exemptions page, and the full set sits in sections 8-40-301 and 8-40-302 of the Act.
Read the table with one question in mind: does this exemption happen automatically, or does someone have to file something? In Colorado that distinction decides whether you are compliant or merely hopeful.
| Worker or setting | How Colorado treats it |
|---|---|
| Sole proprietor or working general partner, outside construction | Not an employee of the business. May elect to be included by endorsement as an employee of the insured, whether or not anyone else is employed |
| Sole proprietor or partner performing construction work | Must either be covered or file a rejection of coverage on form WC 43. Doing nothing is noncompliance |
| Corporate officer or LLC member | An employee of the company by law. May reject only if the person owns at least ten percent and is chairperson, president, vice-president, secretary or treasurer, or is an LLC member who controls, supervises or manages the business |
| Ordinary employees of that corporation or LLC | Covered. A rejection never reaches the workforce, and it may not be made a condition of employment |
| Domestic worker in a private home | Exempt only where the household has no other covered employees and the work is not full-time. Full-time means forty hours or more a week, or five days or more a week |
| Casual maintenance, repair, remodeling, yard, lawn, tree or shrub work about a place of business | Exempt only where the employer has no other covered employees, the work sits outside the course of the business, and wages stay under $2,000 in a calendar year |
| Casual farm and ranch labor | Exempt on the same terms, with the same $2,000 calendar-year ceiling on wages |
| Farm and ranch labor above that level | Covered. A contractor supplying farm or ranch labor must carry coverage for the whole crew before the contract starts, and failing to is a misdemeanor |
| Licensed real estate sales agent or associated broker | Excluded where substantially all pay comes from commissions, a written contract calls the person an independent contractor, and the contract says the person is not an employee for federal income tax |
| Driver under a lease agreement with a common or contract carrier | Excluded from the definition of employee, and separately entitled to be offered coverage by Pinnacol Assurance or its equivalent |
| Ski area volunteer | Excluded, and the operator must give the volunteer written notice that volunteering is not employment under the Act |
| Advisory officers of charitable, fraternal, religious or social employers | Outside articles 40 to 47 where the annual salary or amount does not exceed $750 |
| Independent contractors | Excluded only where the worker is free from direction and control in performing the service and is customarily engaged in an independent trade or business doing that kind of work |
Two rows deserve a second look. The domestic worker test is a trap because it reads on days as well as hours: the Division’s own example is a nanny working three hours a day, five days a week, who is an employee at fifteen hours because the five-day leg of the test is met. And casual labor is a three-part test, so the weekend helper doing what your business does is not casual whatever the invoice says.
Independent contractor status is where most Colorado exposure actually sits. Section 8-40-202 (2) deems anyone paid for services to be an employee unless both halves of the test are satisfied, and a written contract only creates a rebuttable presumption when it carries a notarized, prominently formatted disclosure. Our explainer on what an independent contractor is walks through the general distinction.
Where the Policy Comes From
Colorado employers buy workers’ compensation from private insurance carriers. The Division puts it in one line on its page on obtaining coverage: all workers’ compensation insurance in Colorado is sold by private insurance carriers, and there is no state fund. More than 500 licensed companies can write the line here.
That matters if you compare notes with an employer in a monopolistic state. Where a government fund is the only seller, employer’s liability protection sits outside the fund’s product and has to be arranged separately. Colorado employers buy the standard commercial workers’ compensation and employer’s liability policy from a licensed carrier, so the live question here is which carrier writes you, not which state office does.
An employer the voluntary market does not want still has a route, and it is unusually strong. Pinnacol Assurance is a political subdivision of the state that operates as a domestic mutual insurance company, and section 8-45-101 (5)(f) forbids it from refusing to insure any Colorado employer or cancelling a policy because of the risk of loss or the amount of premium. It is a guaranteed market rather than a monopoly, which is why the Division describes Pinnacol and the private market in the same breath.
The third route is self-insurance, and it is a genuine option only for large balance sheets. Permission comes from the executive director of the department under section 8-44-201, and the Division publishes the qualifying tests on the same coverage page.
| Self-insurance requirement | What Colorado asks for | Source |
|---|---|---|
| Who approves | The executive director, who has sole power to set the terms and may revoke permission at any time, after which the employer must insure immediately | 8-44-201 (1) |
| Time in business | At least five years, or status as a subsidiary of a company that has been in business at least five years | Division employer guidance |
| Size test | At least 300 full-time employees working in Colorado, or assets of at least $100 million, which a parent company’s assets can satisfy | Division employer guidance |
| Financial standing | An exemplary financial position, evidenced through the application the executive director prescribes | Division employer guidance |
| Excess insurance | Required, on top of the retained obligation | Division employer guidance |
| Security | Required, in a form such as a surety bond | Division employer guidance |
| Claims handling | Adjusting done internally or through a third-party administrator | Division employer guidance |
| Fees | Up to $2,000 for an initial application, and up to $2,000 for the annual review of a self-insurer | 8-44-202 (1) |
| Pool option | Only two kinds of self-insurance pool are authorized, for public sector employers and for professional associations, and they are regulated by the Division of Insurance rather than the Division of Workers’ Compensation | Division employer guidance |
For a company of five to fifty people this is background rather than a decision. The working choice is a private policy through an agent, with Pinnacol behind it, and the practical advice from the Division is to describe every service your business offers when you get the quote so that no class of worker is left off the schedule.
Whichever route you take, keep the carrier name, policy number and effective dates somewhere you can reach in under a minute. A general contractor will ask before you set foot on a site, and your own poster has to carry the carrier’s name. If you operate across state lines, our rundown of requirements by state shows how far Colorado’s answer travels.
Posters and What a Worker Receives
Colorado requires one workers’ compensation poster and no hiring packet. Rule 3-6 of the Workers’ Compensation Rules of Procedure requires every employer to post a notice continuously in one or more conspicuous places at all of the employer’s work sites, telling employees that the employer is insured as required by law and naming the insurance carrier or stating that the employer is self-insured.
That notice is form WC 50, the Notice to Employer of Injury poster, and for employers that are not self-insured the insurer supplies it. Section 8-43-102 (1)(b) sets the physical minimum at fourteen inches high by eleven inches wide with half-inch lettering, and the Division’s forms page specifies that the current WC 50 is designed to be posted at 27 inches wide by 40 inches high, with the black and white English version the only one that must go on the wall.
One poster has quietly disappeared. The WC 49 Workers’ Compensation Act poster stopped being required in August 2022, so a board still carrying it is displaying something the state no longer asks for. The WC 50 is the one that counts.
Now the part that gets reversed most often. Colorado hands the employee nothing about workers’ compensation at hire. The documents that must physically reach a worker are triggered by an injury, not by a start date, and there are two of them.
The first is the designated provider list. Rule 8-2 requires the employer or insurer to give the injured worker a written list of designated providers in a verifiable manner within seven business days of the employer’s notice of the injury, including full contact information for the carrier. Fail to supply it and the worker may choose any physician or chiropractor they like, which is the fastest way to lose control of a claim.
The second is the worker’s own notice back to them. Under section 8-43-102 (1)(a)(II), an employer who receives written notice of an injury must stamp the date and time of receipt on it and make a copy of that stamped notice available to the injured employee within seven days. Wage and hour notices are a separate set again, covered in the Colorado minimum wage page.
Injury Reporting Deadlines
Colorado runs several clocks after an injury and they do not start at the same moment. The employee has ten days to notify you in writing, you have ten days to notify your carrier, and the First Report of Injury reaches the Division inside ten days of your notice or knowledge. Everything below comes from the Act itself and from the Workers’ Compensation Rules of Procedure.
One wording gap is worth knowing before you count days. Section 8-43-102 (1)(a)(I) gives the employee ten days, while the Division’s reporting guidance and its Employer Guide both say ten working days, which is the wording the Act uses for employees of a self-insured employer. Treat a notice inside ten calendar days as clearly timely, and do not treat a later one as automatically barred.
| Who acts | Deadline | Detail and citation |
|---|---|---|
| Employee to employer | 10 days | Written notice of the injury. A late employee may lose up to one day’s compensation for each day of delay, with no loss where the employer had actual notice or good cause is shown (8-43-102 (1)(a)(I)) |
| Employee of a self-insured employer | 10 working days | Same written notice, counted in working days (8-43-102 (2)(a)(I)) |
| Employee, occupational disease | 30 days | Written notice within thirty days after the first distinct manifestation of the disease, or after a death from it. Actual knowledge by the employer counts as notice (8-43-102 (3)) |
| Employer to employee | 7 days | Stamp the date and time of receipt on the employee’s written notice and make a copy available to them (8-43-102 (1)(a)(II)) |
| Employer or insurer to employee | 7 business days | The written designated provider list, delivered in a verifiable manner, with carrier contact details. Miss it and the worker picks their own physician (Rule 8-2) |
| Employer to carrier, death or three or more injured | 24 hours | The Division’s employer guidance sets 24 hours; the statute requires immediate notice of a death or an accident injuring three or more employees to the director (8-43-103 (1)) |
| Employer to carrier, everything else | 10 days | Report any work-related injury, illness or exposure to an injurious substance within ten days of notice or knowledge. Failing to may draw penalties or other sanctions (Rule 5.2 (A)) |
| First Report of Injury to the Division, fatality or multiple injury | 3 days | Filed within three days of notice to the carrier or self-insured employer where an injury results in a fatality or three or more employees are hurt in the same accident (Rule 5.2 (B)(1)) |
| First Report of Injury to the Division, reportable events | 10 days | Lost time over three shifts or calendar days, a permanently physically impairing injury, first treatment more than 180 days after notice, or a listed occupational disease. The insurer or third-party administrator may file it for you (Rule 5.2 (B)(2); 8-43-101 (1)(a)) |
| First Report of Injury to the Division, denied claims | 10 days | Also required within ten days of notice or knowledge of any claim for benefits, including medical treatment only, that is denied for any reason (Rule 5.2 (B)(3)) |
| Insurer position statement | 20 days | The carrier must admit or contest liability within twenty days after the First Report of Injury is filed with the Division (Rule 5.2 (C)) |
| Employer to carrier on return to work | On the event | File the Supplemental Report of Return to Work, form WC 12, when the worker returns to any duty or leaves employment |
| Employee claim to the Division | 2 years | A notice claiming compensation must be filed within two years of the injury or death, extendable to three where a reasonable excuse is established (8-43-103 (2)) |
One structural point saves a lot of confusion. The Act puts the reporting duty on you: section 8-43-101 (1)(a) tells the employer to report a lost-time, impairing or long-treatment injury to the division within ten days, and immediately in the case of a fatality. Rule 5.2 (B) then lets the insurer or its third-party administrator file the First Report of Injury on your behalf, which is how it works in practice. So report to your carrier, and confirm the filing actually happened rather than assuming it did.
The waiting period is worth knowing because employees ask about it on day two. Lost wage benefits are not due until the injured worker has missed three shifts, and that waiting period is paid retroactively if the worker misses more than fourteen calendar days from the date they left work. Medical treatment is not subject to any waiting period.
Where a duty in the Act carries no penalty of its own, section 8-43-304 (1) supplies one: a fine of up to $1,000 per day for each offense, apportioned between the aggrieved party and the state uninsured employer fund, with the aggrieved party receiving at least twenty-five percent. Late paperwork in this system is not free.
What Going Uninsured Costs
Colorado fines an uninsured employer for every single day of the default and can order the business to stop operating while it continues. Section 8-43-409 (1) directs the director, on finding a default, to issue a cease and desist order, impose daily fines, or both. The daily amounts escalate on a published schedule rather than landing at the maximum on day one.
| Exposure | Amount or consequence | Citation |
|---|---|---|
| Daily fine before the Division contacts you | $5 per day for each day of default in the three years before a first notice to show compliance | Rule 3-7 (B) |
| Daily fine after the notice to show compliance | $10 a day for days 1 to 10, $30 for days 11 to 20, $50 for days 21 to 30, $100 for days 31 to 40, then $250 a day from day 41 until you comply | Rule 3-7 (B) |
| Second and any later default | $250 to $500 per day for every day of default until compliance or further order | 8-43-409 (1)(b)(II); Rule 3-7 (D) |
| Look-back limit | Fines may only be imposed for periods no more than three years before the Division notifies the employer of a potential violation | 8-43-409 (1.5)(c) |
| Cease and desist | An order to stop business operations immediately while the default continues, with the attorney general instructed to seek injunctive relief and a temporary restraining order in district court | 8-43-409 (1)(a) and (3) |
| The claim itself | The uninsured employer pays medical care and wage benefits directly. The Division puts the average claim at around $10,000 and warns that a severe injury can run upwards of $500,000 | Division employer FAQ |
| Extra penalty on benefits | An additional 25 percent of the compensation or benefits the employee is entitled to, paid into the Colorado uninsured employer fund | 8-43-408 (5) |
| Ignoring the resulting order | A further 50 percent of the order or $1,000, whichever is greater, plus reasonable attorney fees, plus another 25 percent to the fund | 8-43-408 (4) and (6) |
| Loss of exclusive remedy | The employee may instead sue for damages, and assumption of risk, fellow servant negligence and non-willful contributory negligence are all unavailable as defenses | 8-41-101 and 8-41-102 |
| Collection | The fund pays the worker, then recovers from the employer by civil action including the right of attachment, with all court costs charged to the employer | 8-67-110 (3) |
| No cover for the owner | Partners, sole proprietors, directors, officers, LLC members and anyone who was responsible for obtaining the insurance cannot recover from the fund | 8-67-104 (1) |
Colorado does not make going uninsured a crime in the general case, which sets it apart from a number of states. The enforcement here is civil and financial, run by the director through fines, orders and the district court. The one criminal hook tied to coverage is narrow: under section 8-41-401 (4)(b), a contractor who supplies labor for a specified farming or ranching operation without providing coverage commits a misdemeanor punishable by up to sixty days in county jail, a fine of up to $500, or both. The Act saves its felony for something else entirely, a false statement made to obtain benefits under section 8-43-402.
Read the exclusive remedy row twice. Section 8-41-102 protects only an employer who has complied with the insurance provisions. An employer who has not is exposed to an ordinary negligence suit stripped of its three classic defenses, with no statutory ceiling on the verdict. That, not the daily fine, is the number that ends businesses.
What to Do When Someone Gets Hurt
Work the same sequence every time, in this order. The first three steps happen the same day, and the rest run on the clocks in the table above. Deciding whether a claim is legitimate is not on the list, because that call belongs to the carrier and then, if contested, to a judge.
Then keep the file, because section 8-43-101 (1)(a) requires you to keep a record of every fatality, permanently impairing injury, injury costing more than three shifts or days of work, and listed occupational disease. Injury notices, provider lists, restrictions, return-to-work offers and the dates each was sent are exactly what an auditor asks for later, and our walkthrough of the workers’ compensation audit shows how payroll classification and claim history feed next year’s premium.
Most of this is documentation discipline rather than legal judgment. FirstHR keeps injury forms, acknowledgments and policy documents attached to the employee record, so the provider list you handed someone in March is still findable in November without anyone reconstructing it from memory.
Safety programs sit next door to all of this and reduce the number of times you run the sequence at all. Colorado has no approved state OSHA plan for private employers, so the federal baseline applies and is covered in our guide to OSHA requirements for employers. The Division also certifies employers through its premium cost containment program, which can cut premium by up to ten percent.
Frequently Asked Questions
Does a Colorado business with one part-time employee need workers’ compensation?
Yes. Colorado sets no minimum number of employees, and the Division states that the requirement applies whether workers are part-time, full-time or family members. Section 8-40-203 (1)(b) defines an employer as anyone with one or more persons in service under a contract of hire, and anyone paid for services is presumed to be an employee. There is no revenue test and no grace period for a new business, so the policy has to be in force from the first day that person works.
Can I leave myself out of the policy as the owner in Colorado?
Usually, but only by filing. Corporate officers and LLC members are employees by law and stay covered until they reject. Section 8-41-202 allows a rejection where the officer owns at least ten percent of the stock and holds one of five named offices, or where an LLC member owns at least ten percent and manages the business. The election goes on form WC 43 to the carrier, or to the Division if there is no policy, and takes effect the day after receipt, which Rule 3-5 (C) phrases as the next business day. Sole proprietors and general partners in construction must also carry coverage or file the same rejection.
Where does a Colorado employer buy a workers’ compensation policy?
From a private carrier licensed to write the line in Colorado, usually through an agent. The Division states that there is no state fund and that more than 500 licensed companies can write the coverage. Pinnacol Assurance is the guaranteed market: a political subdivision of the state that may not refuse to insure a Colorado employer or cancel over risk or premium. Self-insurance requires a permit from the executive director plus at least five years in business and either 300 full-time Colorado employees or $100 million in assets.
What must a Colorado employer post about workers’ compensation?
Form WC 50, the Notice to Employer of Injury poster, displayed continuously in one or more conspicuous places at every work site under Rule 3-6. It has to name your carrier or state that you are self-insured, and your insurer supplies it if you are not self-insured. The Division specifies the poster is designed for display at 27 inches wide by 40 inches high, with the black and white English version the one required. The older WC 49 Act poster has not been required since August 2022.
How fast does a work injury have to be reported in Colorado?
The employee gives written notice within ten days, which the Division’s guidance phrases as ten working days, or thirty days after the first distinct manifestation of an occupational disease. You report to your carrier within ten days of notice or knowledge, and within 24 hours where someone dies or three or more people are injured in one accident. The First Report of Injury reaches the Division within ten days for a reportable event or three days for a fatality or multiple injury, and your carrier may file it for you. The carrier then admits or contests within twenty days of that filing.
What happens if I have no coverage and someone gets hurt in Colorado?
You pay the claim directly, and the Division warns that a severe case can exceed $500,000. Section 8-43-408 (5) adds a penalty of 25 percent of the worker’s benefits payable into the state uninsured employer fund, and that fund can pay the worker first and then sue you to recover, with the right of attachment. The director can order you to cease operations and can send the matter to the attorney general for an injunction. You also lose exclusive remedy protection, so the worker may sue in negligence with three standard defenses unavailable to you.
Are independent contractors and domestic workers covered in Colorado?
Genuine independent contractors are excluded, but paying someone on a 1099 proves nothing. Section 8-40-202 (2) treats anyone paid for services as an employee unless they are both free from direction and control and customarily engaged in an independent business doing that work, and the Division says the real working conditions decide it. Domestic workers are exempt only where the household has no other covered employees and the worker is not full-time, which Colorado defines as forty hours or more a week or five days or more a week.
Colorado amends its Workers’ Compensation Act more often than most employers check it, and the Division rewrites its rules on a separate cycle again. Our Colorado hiring guide covers what has to be in place before the first employee starts, and a policy in force is one of the items on that list rather than something to arrange afterwards.